Liufus w



(No Model.)

2 Sheets-Sheet I.

R. W. APPLEGARTH 8a E. D. MOORE. WATER COIL BOILBR.

No. 409,184. Patented Aug. 13, 1889.

N. PETERS. PhuwLilhogmpher, Wnshnglon. 11C,

(No Model.) 2 Sheets-Sheet 2.

R. W. APPLEGARTH & E. D. MOORE. WATER COIL BOILER.

No. 409,134. Patented Aug. 13. 1889.

UNITED STATES PATENT OEEICE.

MARYLAND.

WATER COIL BOILER.

SPECIFICATION forming part of Letters Patent No. 409,134, dated August 13, 1889. Application tiled May ll, 1889. Serial No. 310,399. (No model.)

To @ZZ whom, it may concern:

13e it known that we, RUFUS WV. APPLE GARTH and EvERETT D. MooEE, citizens of the United States, residing at Baltimore, in the State of Maryland, have invented new and usefulImprovements in Water Ooil Boilers, of which the following is a specification.

Our invention has for its object to provide a simple, economical, and thoroughlyv efficient means for steaming, washing, iiushing, and cooling the pipes of a beverage-drawing apparatus without the use of chemicals.y n The pipes that are employed for conducting beer, Wine, or other liquids from a keg, barrel, or other source of supply to the tap or faucet ot' a beverage-drawing apparatus are extremely liable to become fouled and internally coated with sediment from the liquors or beverages passed through them. The impurities thus deposited in the pipes are often injurious to health, besides tainting and rendering impalatable such liquids as Amay be subsequently drawn. By forcing solutions of potash, lime, and other chemicals through the pipes they may be cleansed to` some eX- tent; but such substances are themselves liable to form injurious compounds that are not easily removed from the pipes.

It is the purpose of our invention to avoid the use of chemicals, and provide a means for thoroughly cleansing the pipes of a beverage-drawing apparatus by the Vuse of steam and hot and cold water, as hereinafter set forth.

To this end our invention consists in the apparatus hereinafter described and claimed, and which is illustrated in the annexed drawings, in which- Figure 1 is a sectional elevation of our improved steam-generator and pipe-cleansing apparatus. Fig. 2 is a plan of the same with its cover removed. Fig. 3 is a view of the runder, side of the top plate of a burner for heating the steam-generator.

Referring to the drawings, the numeral 1 designates a stand provided with legs 2, and having a central opening in which is supported an atmospheric or Bunscn gas-burner 3, to the lower end of which a gas-supply tube 4 is or may be attached. In the lower part of the gas-burner 3 are a number ot airinlets 5 for the admission of atmospheric air to become mixed with the gas supplied to the burner. The upper part of the burner 3is iiared outwardly, as shown in Fig. 1, to form a circular bottom plate 6, having an upwardlylanged rim 7, on which a circular top plate 8 is supported. The top plate 8 is of greater diameter than the bottom plate G, and is secured thereto by screws 9 or otherwise. The under side of the top plate8 is beveled at the periphery and provided with an annular series of radiating grooves 10 for exit of the mixture of gas and air from the space between the burner-plates. On the under side of the top plate 8, at suitable intervals bctween the grooves 10, as shown in Fig. 3, may be located lugs 11 to engage the inner side of the iianged rim 7, for the purpose of properly centering the top plate.

On the stand 1, within an annular liange 12 formed thereon, is supported a cylindrical shell or casing 13, having a series of lateral air-inlets 14 near its lower end. It desired, an air-inlet 15 may be provided in thc stand l, on which thc shell 13 is supported.

Vithin the shell or casing 13 is a waterheating and steam-generating coil 1G, having the form of a frustum of a cone, arranged with its larger end downward and near the lower end ofthe casing. This coil is securely supported in the shell or casing by means ot its inlet and loutlet pipes, which perforate said casing near its upper end.

The upper or inlet leg a of the coil 1G is extended upward to connect, by means ot a bend or elbow 17, with a horizontal water-in* let pipe 18 of comparatively large bore, through which water may be introduced to flood the coil when desired. This inlet-pipe 18 is provided outside the shell or casing 13 with a hand-valve 19 for controlling the supply of water. Communicating with themain wateihinlet pipe 18, on opposite sides of the valve 19, as shown in Fig. 2, is a by-pass tube 20, of smaller diameter, and provided with a petty valve 21, which is to be opened andthe large valve 19 closed when it is'desired to admit into the coil 1G only a small stream or spray of water for the purpose of rapidly generating stealn in said coil, which should be previously heated. The same result can IOO be obtained by providing the main water-in let pipe with a valve having two passages of diil'erent diameters-onelor a large stream ot` water, when it is desired to flood the coil, and the other for a small stream of spray, when the coil is to be used for generating steam.

'lhe lower or outlet leg` I) ot' the coil lo' is preferably extended upward along the inside of the shell 1S, and connects with a bend or elbow 22, which in turn connects with an outlet-pipe 23, that ispassed horizontally through the shell.

'ater may be supplied to the inlet-pipe 1S through a hose or flexible tubing 2l, that can connect with a house-service pipe or other convenient water-supply, and steam and water may be delivered from the outlet-pipe through a hose or liexible tubing 25, adapted to be connected at one end to said outlet-pipe and at the other end with the pipes to be cleansed and flushed.

It will be seen that the lower portion of the coil .lll surrounds the ilaring Bunseu burner $3 in such a manner as to receive the fullv ef- Afeet ot the radiating jets olf nonduniinousbut intensely-heating llame issuing from the radiating-grooves or gassexits l0 ot' the atmospheric gas-burner. The coil le may be thus quieklyheated before admitting water thereto, and then by opening the valve 2l a small stream or spray ot' water can be introduced through the by-pass 2O into the heated coil 1G, where it will be quickly converted into steam, and can be conducted through the hose 25 into and through the pipes of a beverage-drawing apparatus. The steam that is thus passed through the pipes to be cleansed will soften and loosen the slilne, scale, and sediment accumulated therein, so that such impure and injurious deposits will readily become detached and be forced ont at the opened tap or faucet. The sedimentor scum being thus softened and somewhat removed by means of the stream passed into and through the fouled pipes of the beveragedrawing apparatus, the valve l) of the main water-inlet pipe 1S should new be opened so as to admit suliicient water to tlood the heated coil 1(1,inwhieh the water will become quickly heated, and,passing on to the beverage-pipes, will force out any scale or sediment that may not have been removed by the steam. The supply of gas to the burner ii should now be cut oft', so as to extinguish the ilame, and a continuous stream of cold water may now be passed through the coil lli and into the connected pipes ot' the beverage-drawing apparatus to cool the same and remove every ves tige of sediment.

By providing the main water-inlet pipe 1S with a hand-valve lil and a by-pass 20, of smaller diameter, and having a valve 2l, as described, whereby one valve admits only sulhcient water to generate steam, while the other or larger valve must be opened to supply su llieient water to flood the coil, a simple and convenient means is provided for properly operating the apparatus, without requiring the services of a skilled engineer.

The lower part ot' the coil 1G is provided with a draw-oft cock 2li for draining the coil after it has been in use.

As shown, the shield or casing 13 is provided with a conical top or reniovable cover 27, having a chimney 2S for exit ot' the products of combustion.

ln order to retain the heatof the apparatus and render it more economical, the easing lli may have a lining 29, of asbestus or other tire-proof material, and a layer or plate 30, ol' similar material, may be placed above the water-heating and steam-generatin g coil.

lVhile especially designed for use in cleansing the pipes ot a beverage-drawing apparatus without requiring the employment of lime, potasl1,soda, or other objectionable substanees,it is obvious that this apparatus may also be usefully and conveniently employed as a portable steam generator and waterheater for bath-tubs, vapor-baths, and other purposes.

What we claim as our invention is l. The combination of a shell or casing having air-inlets near the bottom, a waterheating and steam-generating coil supported in said casing, and a valved inlet-pipe communicating with the upper end of said coilv and adapted to admit thereto either a largo or small stream of water, the lower leg ot said coil being extended upward within the asing and adapted at its upper end for attachment ot a llexible hose, substantially as described.

2. The combination olf a shell or casing having air-inlets near the bottom, a lunsen burner located in the lowerpart ot said shell, a waterheating and steam generating coil supported in the shell or casing with its lower portion in position to be acted on by the diverging llame jets ol the lunsen burner, a valved inlet-pipe colnnntnicating with the upper end of the coil for the purpose of introdueing water to ilood the same, said inlet.- pipe provided with a by-pass having a petty valve to control the introduction ol' a small stream of water into the coil for the purpose oli' generating steam therein, a draw-olif cock located in. the lower part of the coil, and an outlet-pipe extending from the lower end of the coil, substantially as described.

ln testimony whereof we have allixed our signatures in presence of two witnesses.

RUFITS \V. A'PllilGAlt'lll. EVERETT l). MUORE.

\\'itnesses:

JNo. l). Titrseoun, WM. Il. JoNEs.

TOO

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